公开(公告)号：US20240334097A1

公开(公告)日：2024-10-03

申请号：US18606682

申请日：2024-03-15

Applicant: Nokia Solutions and Networks Oy

Inventor： Michael STRAUB ,  Rene BONK ,  Thomas PFEIFFER

IPC: H04Q11/00 ,  H04L43/0876 ,  H04L47/38

CPC classification number: H04Q11/0067 ,  H04L43/0876 ,  H04L47/38 ,  H04Q2011/0049 ,  H04Q2011/0064 ,  H04Q2011/0084 ,  H04Q2011/0086

Abstract: This application relates to a method for managing traffic flow in a passive optical network (PON) which connects an optical line terminal (OLT) to a plurality of optical network units (ONUs) via an optical distribution network (ODN). The method may comprise obtaining one or more optimization parameters for a target state of the PON. The method may also comprise determining for one or more or each of the ONUs, a respective modulation scheme for communicating data between the OLT and that ONU. The method may further comprise determining a respective power distribution ratio for a distributive element of the ODN for one or more of the ONUs based on the determined modulation scheme and the one or more optimization parameters. Specifically, the distributive element may have a first port and a plurality of second ports. In particular, the first port may be associated with signal transmission between the OLT and the ODN, and each second port may be associated with signal transmission between the ODN and a respective ONU or a respective group of ONUs. Besides, each of the second ports of the distributive element may be associated with a power distribution ratio of optical power at that second port to optical power at the first port of the distributive element. Furthermore, the method may comprise adjusting a respective branch power for the one or more of the ONUs based on the determined power distribution ratio for communicating data between the OLT and the one or more of the ONUs.

公开(公告)号：US20210185418A1

公开(公告)日：2021-06-17

申请号：US17096286

申请日：2020-11-12

Applicant: Nokia Solutions and Networks Oy

Inventor： Werner VAN HOOF ,  Rene BONK ,  Robert BORKOWSKI

IPC: H04Q11/00 ,  H04B10/2507

Abstract: Various example embodiments of the present disclosure relates to a physical layer, PHY, circuitry for an optical line terminal, OLT, the PHY circuitry being configured to receive a control signal including an identification of a transmitting ONT for pre-loading an equalization configuration associated with the identification of the transmitting ONT. Other example embodiments relate to a medium access control, MAC, circuitry for OLT, the MAC circuitry being configured to determine an upstream allocation map for optical network terminals, ONTs, and to generate a control signal for a PHY circuitry including synchronization information for receiving upstream optical signal bursts from a transmitting ONT and an identification of the transmitting ONT based on the upstream allocation map. Further example embodiments related to an optical line terminal, OLT, and a method therefor.

公开(公告)号：US20220190914A1

公开(公告)日：2022-06-16

申请号：US17540665

申请日：2021-12-02

Applicant: Nokia Solutions and Networks Oy

Inventor： Paul Henri Marie CAUTEREELS ,  Carl Julien Godelieve MERTENS ,  Michael FIVEZ ,  Rene BONK

IPC: H04B10/079 ,  H04B10/2575

Abstract: The present disclosure relates to an optical line terminal, OLT, which is enabled to range optical network units, ONUs, in a point-to-multipoint optical network by detecting interference burst sequences transmitted by one or more joining ONUs during transmission of upstream data traffic from transmitting ONUs. The present disclosure further relates to an optical network unit, ONU, which is enabled to transmit, at a selected transmission time, an interference burst sequence including a sequence of pulses allowing the OLT to identify the ONU as a joining ONU.

公开(公告)号：US20210250100A1

公开(公告)日：2021-08-12

申请号：US17136809

申请日：2020-12-29

Applicant: Nokia Solutions and Networks Oy

Inventor： Jochen MAES ,  Robert BORKOWSKI ,  Rene BONK

IPC: H04B10/516 ,  H04B10/61 ,  H04L25/03

Abstract: An apparatus for signal modulation in a point-to-multipoint optical network is configured to modulate a single-wavelength carrier wave before distribution towards optical receivers of a first type adapted for intensity detection and a second type adapted for optical field detection. The apparatus includes a first module configured to modulate the carrier wave by varying the intensity of the carrier wave to represent data intended for the first type of receivers, and by controlling the phase and/or polarization of the carrier wave during selected periods. The apparatus includes a second module configured to modulate the carrier wave by varying the phase and/or polarization of the carrier wave to represent data intended for the second type of receivers, and by varying the intensity of the carrier wave during selected periods.